Blue Ivy Carter is just two days old -- but her music career has already begun!
The track was produced by Pharrell and credits little Blue as "B.I.C."
Dropping rhymes shortly after his daughter's Saturday birth in NYC, the rapper (real name: Shawn Carter) is at his most emotional, rapping: "The most amazing feeling I feel, words can't describe what I'm feeling for real / Baby, I paint the sky blue, my greatest creation was you."
Referencing first-time mom Beyonce's musical past, the hip hop star adds: "You're the child of destiny / you're the child of my destiny / you're my child with the child from Destiny's Child."
The notoriously private star even reveals that he and Beyonce, 30, conceived the baby in Paris, and opens up about a miscarriage in the past.
"Last time the miscarriage was tragic / We was afraid you'd disappear but nah baby you're magic."
Listen to Jay-Z's moving "Glory" now.